Healthspan is the years we live in good health, while lifespan is total years...

https://www.medicaldaily.com/marc-kielburger-healthspan-vs-lifespan-why-purpose-belongs-longevity-conversation-478751

Healthspan is the years we live in good health, while lifespan is total years lived. The US sees a 12.4-year gap between lifespan and healthspan, meaning many live longer but with illness